- Yes, we will respin the LMDE ISOs for Update Pack 4
- No, we can’t say whether MATE or Cinnamon will be the default yet, and whether they will be on the same medium, but both will be fully supported.
- Yes, we’re also updating Firefox and Thunderbird to version 11.0

Since he is already going to respin ISO with UP 4, no point in voting. It's a standard thing to update ISO with latest apps and Update Packs